Heat treating machine



July 30, 1935. w. A. DARRAH HEAT TREATING MACHINE Filed Feb. 19, 1932 4Shgfiets-Sheet 1 [711/9 12 tor.

4 Shejs-Sheet 2 W. A. DARRAH HEAT TREATING MACHINE Filed Feb. 19, 1932July 30, 1935.

rm V hue/2X02".

July 30, 1935. w. A. DARRAH 2,009,431

HEAT TREATING MACHINE Filed Feb. 19, 1932 4 Sheets-Sheet s Inventor.

y 1935. w. A. DARRAH HEAT TREATING MACHINE 4 Sheets-Sheet 4 Filed Feb.19, 1932 my. I

m r n m $57 1 I I m v M Fig. 11

fjig. I Zl.

Inuevtoz: 7

Patented 1.1, so, 1935 UNITED STATES PATENT OFFICE 17 Claim.

This invention relates to processes, methods and equipment for heattreating and while it is particularly applicable to the heat treating ofsteel, this invention may be applied in many cases to heat treatment ofother metals or indeed of many other materials.

The object of my invention is to provide a simple, compact andeconomical apparatus and method for subjecting steel or other materialsto a pre-determined cycle, typical examples of which will be describedlater in this specification.

One of the objects of my invention is to provide mechanical means forinsuring exactness of the cycle, both as to heating timeatransfer times,temperatures and other important details.

One important feature of my invention is the provision of mechanicaltransfer means which will be positive, simple and permit easy reductionof speed and other factors. Other features of 20 my invention involve autilization of the fuel with a high degree of economy.

By utilizing mechanical transfer and moving means I also eliminate themany variable factors which result from manual operation which is atpresent almost universally the case in this field. f In order to explainmy invention I will select a specific case of heat treating steel,although it should be distinctly understood that the methods andapparatus here set forth can be applied 'with equal success to manyother materials by making certain obvious changes.

Referring to the drawings, Figure 1 shows a plan view of one form of myinvention. Some portions of the equipment are shown broken away 35 andpartly in section in order to more clearly set forth the details ofconstruction.

\ Figure 2 shows a vertical elevation partly in Referring to thedrawings, l indicates a frame or structure which supports the mechanism.A

motor 2 driving a speed reducing device 3 serves to activate shaft 4. Aseries of bevel gears or the equivalent 5, 6, I, and 8 serve to operaterespectively shafts 9, l0, H and i2. Each of these shafts carries an armas for example l3, I4, I 5

and I6. These arms which may be substantially identical althoughdifierent in length if desired, carry near their outer end an engagingpin as for example IT. The pin is substantially similar on all of thearms. The arms may be so arranged as to show a definite angulardisplacement at any 5 one time for purposes to be later discussed.

Located beneath the frame I are a series of containers for carrying onthe various operations. One of these containers is indicated as a metalpot I8, which may be formed from steel or alloy 10 and which issupported by a refractory setting l9 and heated by means of a burner 20arranged for oil, gas, powder 2d coal or other desiredfuel. The settingIQ for pot It, may be insulated'as required for example by theinsulation 2i. The 15 products of combustion after leaving thecombustion space in setting I! beneath pot l8, may pass by. means offlue 22 to outlet 23 which for purposes of clearness'may be called thepreheat position. eflue 22, preheat position 23, set- 20 ting l9 and epot l8 may be housed in a suitable shell or other material, as indicatedby 24. I have shown housing 24 resting on the floor or ground althoughobviously this may be raised to any desired height. v 25 In pot I 8 Ihave'shown a liquid indicated by 25 which may be a fused salt such ascyanide, nitrate, chloride, etc. or it can be a molten metal such aslead or in certain cases zinc, tin, etc. may be employed. In theselatter cases the oper- 30 ation would involve a coating or covering ofthe material placed in the pot as well as the heat treating. Adjacent topot 18 I have shown a container 26 filled to level 21 with a cooling orquenching 35 liquid such as oil or water. This container shouldpreferably be somewhat larger than pot l6 and some means such as coil 26should be provided to remove the heat which is liberated from time totime. In place of coil 28 I may as an alter- 4 hate introduce thecooling medium through inlet 29 and remove it through outlet 30. Oncooling the oil or other medium it may be returned to container 26 or inthe case of water, it may be run to waste.

Adjacent to container 26 I have shown an additional container 3| filledwith a cleaning or washing solution 32 and provided with inlet flange 33and outlet flange 34. Steam coils 35 maybe provided for maintaining thesolution a: at the de- 50 sired temperature. The solution may consist ofwater containing various cleaning solutions such as sodium silicate,tri-sodium phosphate, soaps or dilute acids or alkalies.

Placed adjacent to containers ll, 26 and II is 55 a drawing chamber 36enclosed by wall 31 with insulation 38 and connected by air movingdevice 39 so as to draw a portion of the products of combustion fromsetting l9 and thereby supply controlled heat to drawing chamber 36through duct 40. The arrows indicate the direction of circulation of theheated mixture of air and gases. It will be noted the hot gases-aftertravelling through the drawing chamber 36 return in large measure to thevent 39A where they are reheated and then recirculated through fan 39 tochamber 36.

The material to be treated is to be loaded in baskets or containers 4|which are carried by rod a2 provided at its upper end with a socket 43arranged to engage pin Socket 43 also carries a-pair of rollers 44 and45 for purposes to be later described Rollers 44 and 45 are arranged torest on supporting angle or track 46 and to slide on inclined track 41for conveying the material after leaving the various baths.

It will be understood that I may use any part of the equipment hereshown and described without the entire assembly. For example in manycases the drawing chamber 36 with its associated equipment may beomitted in which case the articles being treated would be passed throughthe hot bath 25, the quench 21 and the washing 32 after which theoperation would be complete. It is also evident that if the drawingchamber 36 is employed the washing bath 32 may be omitted or if desiredthe washing bath 32 may also serve as the quench medium. I may,therefore, make many arrangements and alterations in the apparatus whichI have disclosed, without departing from the spirit of my invention.

In case the drawing chamber 36 is omitted the return portion of track41. indicated by 48 should be continued so that the treated materialwill return by gravity to the starting point, otherwise track 41 isterminated at point 43 with a stop 49. In this case shaft 50 carryingarm 5| which is similar to arms l4, l5, l6, etc. already described,serves to remove the material from track 48 and place it on tracksection 52. On this track it is rolled through drawing chamber 36 bymeans of chain 53 and at the end of drawing chamber 36 the work iselevated by means of arm 54 actuated by shaft 55 and replaced in theposition indicated by member 56A on track 51. From this point thecontainer or basket travels by gravity to the starting point. Shafts 50and 55"are shown driven by means of shaft 56A and the pairs of bevelgears 51 and 56. Shaft 56 is in turn caused to revolve by means ofchains 59, 60 and 6| using the obvious means of sprockets andcountershafts as illustrated. Chain 53 is shown passing in a closecircuit around sprockets 62 and 63 which may be driven in any convenientmanner, preferably from original motor 2.

In operating my equipment the material to be treated is loaded incontainer or basket 4|. A

a series of rods or shafts represented by 65 are used to illustrate theload. These may be placed in a vertical position which is quitedesirable for both heating and quenching.

A cover 66 is shown permanently attached to supporting member 42 in theposition indicated.

After loading the work in container 4| it is allowed to stand apre-determined time over the preheat position 23. In this position thewaste heat of a portion of the products of combustion of pot l6 passaround and in contact with the material 65.

It will be understood that basket 4| is either constructed merely as aframe work or is fully perforated so as to provide ready access and exitfor gases or for the liquids during the treating process. When it isdesired to operate the equipment a timing mechanism or other desiredform of switch closes an electric circuit setting motor 2 in operation.Shaft 4 is then caused to revolve and in turn each of the counter-shafts9, III, II and I2 and associated equipment begin to revolve. The armsl3, l4, l5 and I6 then engage with the upper end of the carriers of thebaskets or containers in each of the respective positions andsuccessively lift the container from the washing tank 3 I, placing it ontrack 41 so that it travels into position for the drawing operation. Asevery rotation continues arm I4 lifts the preceding container from thequench bath 26 and places it in the washing condition. In the same wayarm I5 lifts the container from the pot containing the heated bath andquickly transfers it into the quenching position while the first armlifts the hanger from its position on track 66 the preheat position andplaces it into the quench tank. Each of these operations is carried outas the shafts make a revolution not exceeding After a revolution of 180has been made a limit switch opens the electric circuit and theequipment remains at rest until the timing device or the equivalentmanually operated switch again starts the apparatus in motion and thecycle .is repeated.

The -peed of transfer is so adjusted that th 180 revolution is made in afew seconds preferably a period ranging from '3 to 10 seconds. This timeis of course controlled by the speed of revolution of the shafts,carrying the various lifting arms. It will be noted that the materialbeing .treated remains in each of the positions substantially the samelength of time and that this period is accurately duplicated each cycle.Tlus I consider of great importance. The maximum time required for anyone step in the cycle naturally controls the time of all of theapparatus.

While the shafts 9, ||I, II and I2 are in operation transferring thematerial being treated from one basket to the next, shafts 56 and '55*are revolving, one (shaft 50) placing a new basket in the drawingchamber 36 while the other (shaft 55) serves to withdraw a basket fromchamber 36 placing the trolley which carries this basket in the positionindicated by 56A in track 51.

A typical cycle which I have found very effective in treating certainsteels, consists in preheating the material over duct 23 until itreaches a temperature between 600 and 700 F. The material is thenautomatically transferred as explained, into pot I8 which may containfused cyanide maintained at a temperature of approx imately 1520 F. Itwill be noted that the preheating time is suf'icient to materially raisethe temperature of the articles, thereby lessening the thermal shockwhen they are placed in the high temperature bath and also reducing theamount of thermal work which must be done in bath 16. It is desirable inmost cases, however, to keep the temperature of the articles during thepreheating period below the point at which scale or oxide will form.

In treating small shafts or rods having a diameter ranging from to inch,a heating time ranging from fifteen to twenty minutes in each of thepositions has proven very satisfactory. A transferring period of five tosix seconds is desirable particularly from the fused bath 2| into thequench solution 21.

For many purposes it is desirable to use for the quenching medium oil,maintained at a temperature between 90 and 100 F. This period shouldalso be in the neighborhood of fifteen to twenty minutes. The timerequired for washing or rinsing likewise is ordinarily between fifteenand twenty minutes and a good cleaning solution maintained at atemperature close to the point and at boiling water will readily obtainthe desired results. For drawing, I prefer to use a considerable longerperiod than that provided in the other operations. In many cases I wishto employ two temperatures ranging from 400 to 600 F. and a heating timeranging from a minimum of perhaps forty-five minutes to a maximum ofperhaps an hour and a half.

It should be understood that the composition of the steel or materialbeing treated, the results which it is desired to obtain and the purposefor which the apparatus will be used all have an important part incontrolling both time periods and temperatures.

As an aid to efficiency cover 66 is so located that it will close thetop of the various containers as for example I8, 26, 3|, etc. when theyare in the proper position. In order to obtain a proper register cover66 is movably supported on rod 42 being located by lugs 69. This permitsthe cover 66 to engage with the top portions of the various containerswhile the basket itself seeks its proper level. The use of cover memberit not only serves to prevent heat loss, but also effectively retainsfumes, vapors, etc. which would ordinarily come from the fused bath, thequench bath and the washing solution.

-I have found with my equipment that one operator can handle the workordinarily required of from four to six men by present methods. Thesaving in labor, therefore, is very great. The\ labor saving is ofcourse due to the elimination of manual labor and the fact that theequipment not only mechanically transfers the material treated from eachstage to the next, but also returns the finished work to substantiallythe position occupied by the operator.

By means of using a portion of the products of combustion to preheat theincoming cold work and another portion to draw the finished articles,the recovery of the heat is extremely high. It will be understood thatin the drawing operation additional fuel is burned to supplement thewaste heat from the products of combustion, and the controlledtemperature is held under automatic control by means of increasing ordecreasing .the fuel suppliedfrom the auxiliary burner I0. As a resultof this arrangement I obtain great economy of fuel.

By reason of the mechanical transfer and the automatic timing each stepin the operation of time equipment is carried out without-manual care onthe part of the operator. It will be apparent, therefore, that allmaterials treated pass through exactly the same cycle and, therefore,there will be no defective work as in the case of present manualapparatus. By giving a quick transfer, which is possible with the aparatus and process I have invented, the change of condition during thetransfer time is relatively small; This is of great importance as forexample a slow transfer between pot l8 and container 26 would cause thematerial to lose considerable heat, so that the results of the quenchingoperation would naturally be irregular and uncontrollable.

' Since my apparatus substantially duplicates thetransfertimeineachcase,thisdimcultyis eliminated.

The cover member 06 may serve to retard and prevent the loss of heatduring the transfer period both by supplying radiation and restrictingthe circulation of currents of cooler air.

By using the preheating arrangement and doing less thermal work'in potI8, I am able to operate this pot at a materially lower temperature thanwould otherwise be possible. This-results in a materially increasedlength of pot life. I have been able to obtain a pot life exceeding 2000to 3000 hours, while under normal conditions with the same amount ofwork the pot life would only be slightly in excess of 1000 hours.

By placing the arms I3, l4, l and It at diflerent angular relations, Iam enabled to so arrange to get a rapid transfer which would be quiteimpossible with an apparatus of this kind, if the motion werecontinuous. For example a continuous motion of arm l5 sufliciently slowto give the requisite time for the material in bath 25 would seriouslycool the material during the transfer period and the quenching operationwould be quite unsatisfactory.

I, therefore. consider the intermittent operation of my device ofconsiderable importance in containers or pots may be interchanged asdesired.

In order to control the extent of the preheat obtained over outlet 23, Ihave provided damper l5 connecting outlet flue 23 to the outside air bymeans of duct 16. By opening or closing damper I5 varying amounts ofoutside cold air can be drawn into: the preheating chamber therebydiluting the hot products of combustion and lowering their temperature.It will .be apparent that this device permits controlling thetemperature of the kettle in the preheat position without effecting theamount of fuel burned under pot. It. It will also be apparent thatunless I have some such means for controlling the temperature of themixed gases passing upward over the work, V

the material being preheated may at times reach undesirabletemperatures.

Referring to Figure 5, 10 indicates the main line conductors which forpurposes of illustration are shown as indicating a three wire or threephase alternating current electrical circuit. I9 indicatesdiagrammatically a squirrel cage or induction type motor used fordriving the equipment. 80 indicates the automatic timer which may beconsidered as consisting of any standard device for this purpose now onthe market. These devices ordinarily consist of a clock mechanism eitherelectrically driven or by spring in the usual manner. They are soarranged as to close an electrical circuit at intervals. The circuit tobe closed in this case is indicated by 8|. The relay contacts beingclosed are shown as 82. The limit switch employed to stop the equipmentafter each revolution of the lifting arms is shown diagrammatically bythe lever 83 pivoted at 84 and carrying on its upper portion a gravityactuated switch member 85 indicated on the drawings as a mercury contactswitch. The limit mechanism is housed in container 86 shown for purposesof clearness in dotted lines. A pair of fusesB'l may be provided toprotect this equipment in case of short circuit or other failure. Levermember 83 is rotated out of the normal position by means of 9, lug 88,which is indicated diagrammatically in Figure 5, but which in practicewouldbe mounted on one of the moving arms as for example I6.

As previously explained, the automatictimer 88 periodicallycloses thecontact 8|, threby actuating relay 82 which in turn energizes coil 89thereby closing switch 90 and-setting the motor I8 in operation. Afterany of the moving arms have completed one revolution the contact of lug88 on moving arm I6 tips lever 83, thereby closing a circuit which opensrelay 82 in turn opening switch 98, stopping motor 19.

In the past, in carrying out operations similar to those for which myequipment and process is designed, it has been customary to depend onmanual estimates of time, temperature and other factors. It will benoted, however, that my equip ment offers means of rigidly andmechanically maintaining any desired cycle including all of the varioussteps; and such cycles cannot be varied by the workmen. 0n the otherhand, the timing of my equipment can be instantaneously changed bymerely setting a hand on the automatlc timer 80 for any desired cycle.My equiping, heating and drawing operations and serve to retain fumesand vapors in the quenching or cleaning operations.

It will be apparent that by making motor 2 of the variable speed typeand following any of the well known constructions for this kind ofdevice, I can at will change the speed of rotation of transfer arms suchas l3, l4, l5 and I8 and can, therefore, very readily adjust thetransfer time without affecting other constants of the heat treatingcycle, such as the time in the heating bath, drawing oven, etc. I,therefore, consider one of the advantages of my device the ability tovary the transfer time independently of other factors in the heattreating cycle.

By utilizing the gravity return as previously outlined it is possible tomaterially reduce the cost of equipment constructed in accordance withmy invention and yet accomplish the saving of labor by eliminatingnecessity for the operator to move from his normal position. It will beapparent that in order to obtain a gravity return, it is necessary forthe supporting track on the return side to be inclined with thehorizontaland the transfer mechanism which I have em,- ployed permitssuch inclining in that it is able to lift the trolleys carrying thematerials to be treated from a low position and discharge them at a moreelevated position. This I consider one of the peculiar advantages of theconveying type of mechanism which I have devised.

It should be understood that while I have describedthe mechanism used incarrying out the heat treating process in the terms ordinarily employedfor heat treating equipment, the mechanism I have disclosed can to equaladvantage be used in connection with many other operations, such aselectro-plating, cleaning, pickling, dye-' ing,'coloring, etc. Ingeneral terms, therefore, I designate my equipment as intended fortreating materials in order to properly cover the field to which it maybe properly applied.

An additional air heater may be employed as indicated to supply heatwhen the main burner underpot I8 is not operating or does not supplysufficient heat for the operation.

Having now fully described my invention, which I claim as new and wishto secure by Letters Patent, is as follows:

1. An equipment for heat treating consisting of a material carrier, aloading station and a multiple of adjacently arranged housings, theinteriors of which are maintained at different temperatures, one of saidhousings serving to preheat, another to heat, and another to quench anda mechanical timer to control the interval between transfer, saidheating housing being adapted to hold a heated liquid bath, and anintermittently operated transfer mechanism arranged to automaticallytransfer the material carrier and material being treated successivelyfrom one housing to the next, and back to said loading station, all asactuated by said automatic timer.

2. An equipment for heat treating consisting of a multiple of adjacentlyarranged housings, means for maintaining the interior of said housingsat different temperatures, an intermittently operated transfer mechanismarranged to automatically transfer the material being treatedsuccessively from the interior of one housing to the interior of thenext, and gravity operated means for returning said material beingtreated from a position adjacent the final housing to a positionadjacent the initial housing.

3. An equipment for heat treating consisting of a multiple of adjacentlyarranged housings, means for maintaining the interior of said hous-11185 at different temperatures, an intermittently operated transfermechanism arranged to automatically transfer the material being treatedsuccessively from the interior ofv one housing to the interior of thenext, gravity operated means for returning said material being treatedfrom a position adiacent the final housing to a position adjacent theinitial housing and electrically operated automatic timing equipmentcontrolling the interval between operations of the transfer mechanism.

4. An equipment for heat treating consisting of a multiple of adjacentlyarranged housings, means for maintaining the interior of said housingsat different temperatures, an intermittently operated transfer mechanismarranged to automatically transfer the material being treatedsuccessively from the interior of one housing to theinterior of thenext, gravity operated means for returning said material being treatedfrom a position adjacent the final housing to a position adjacent theinitial housing, and means for controlling the speed of transfer fromone housing to the next.

5. An equipment for treating materials consisting of a multiple ofadjacently arranged housings, means for maintaining the interior of saidhousings at different temperatures, a conveyor mechanism fortransferring the material being heated automatically and successivelyfrom the interior of one housing through a vertical curvilinear pathinto the interior of the next housing and finally'to the elevatedportiBn of an inclined track arranged to return said material beingtreated by gravity to a point adjacent the first of said series ofhousings.

-6. An equipmentior heat treating consisting-of a multiple of adjacentlyarranged housings, means for maintaining the interior of said housingsat different temperatures, a supporting member arranged to carry thematerial to be treated, a cover carried by said supporting member andarranged to substantially close said housings, and an intermittentlyoperated transfermechanism arranged to automatically transfer saidsupporting member successively from one housing to the next.

7. An equipment for heat treating consisting of a multiple of adjacentlyarranged housings, means for maintaining the interior of said hous ingsat diiferent temperatures, a supporting member arranged to carry thematerial to be treated, a cover carried by said supporting member andarranged to substantially close said housings, an intermittentlyoperated transfer mechanism arranged to automatically transfer saidsupporting member successively from one housing to the next, and aconveyor for automatically returning said supporting member from thefinal housing to a position adjacent the initial housing.

8. In an equipment for treating materials, a series of stationsincluding a loading station, a preheat station, a heating station and aquenching station, means for delivering waste heat from said heatingstation to said preheating station, a work support for material beingtreated and an intermittently operated transfer mechanism arranged toautomatically transfer said support for said work being treated and saidwork successively from one station to the next and finally back to thestarting point at predetermined intervals, driving means arranged tosimultaneously actuate said transfer mechanism and electrically timedmeans for controlling the interval between successive movements of saidtransfer mechanism.

9. Arr equipment for treating materials consisting of a multiple ofadjacentlyarranged housings, means for maintaining the interior of saidhousings at different temperatures one of said housings serving to heatsaid material, and another housing to quench said material, a loadingstation, a support for said material being treated, a transfer mechanismarrange d'along said housings to automatically and'j -rr'iechanicallytransfer said support and its lo'ad' offm'aterial successively from theinterior'of .onehnusing to the interior of the next, and back to thestarting point, and an automatic timing device controlling the time ofoperationof said mechanism said transfer mechanism being arranged tooperate intermittently under the control of said automatic timingdevice.

.10. An equipment for treating materials comprising a preheat housing, aheating housing and a quenching housing, an intermittently operatedtransfer mechanism extending above said housings and arranged toautomatically transfer the materials being treated successively from onehousing to the next and mechanically operated timing means forcontrolling the interval between successive movements of saidintermittently operated transfer mechanism.

11. An equipment for treating materials comprising a preheat housing, aheating housing and a quenching housing, an intermittently operatedtransfer mechanism extending above said housings and arranged toautomatically transfer the materials being treated successively from onehousing to the next, mechanically operated timing means for controllingthe interval between successive movements of said intermittentlyoperatcd transfer mechanism, and-a conveyor for automatically returningthematerial to be treated from said quenching housing to a positionadjacent said preheating housing.

12. An equipment for heat treating consisting of a heating housingadapted to contain molten material, and a quenching tank arrangedadjacently to each other, a support for material being treated, meansfor maintaining the interior of said housing at a controlledtemperature, an intermittently operated transfer mechanism arranged toperiodically transfer said support and material to be treatedsuccessively from a loading station into said heating housing andfinally into said quenching chamber, and a conveyor mechanism formechanically returning said sup-' port and material being treated backto a point adjacent said loading position.

13. An equipment for heat treating consisting of a heating housingconstructed to contain liquid material, quenching tank, and a washerarranged adjacently to each other, a support for material being treated,means for maintaining the interior of said housing at controlled temperatures, 'an intermittently operated transfer mechanism arranged toperiodically transfer said .support and material to be treatedsuccessively from a loading station into said heating housing, then intosaid quench tank and finally into said washer, and a conveyor mechanismfor mechanically returning said support and material being treated backto a point adjacent said loading position.

14. An equipment for heat, treating consisting 'of a heating housingconstructed to contain said drawing oven, and a conveyor mechanism' formechanically returning said support and material being treated back to apoint adjacent said loading position.

15. An equipment for heat treating consisting of a preheating housing, aheating housing constructed to contain molten material, a quenchingtank, a washer and a drawing oven all arranged adjacently to each other,a support for material being treated, means for maintaining the interiorof said housings at different.

temperatures, an intermittently operated transfer mechanism arranged toperiodically transfer said support and material to be treatedsuccessively from a loading position into said preheating chamber, saidheating chamber, then into said quench tank, said washer and finallythrough a drawing'oven, and a conveyor mechanism for mechanicallyreturning said support and material being treated back to a pointadjacent said loading position.

16. An equipment for heat treating consisting of a preheat housing, aheating housing constructed to contain molten material, and a quenchingtank arranged adjacently to each other, a support for material beingtreated, means for maintaining the interior of said housings atdifferent temperatures, an intermittently operated transfer mechanismarranged to periodically transfer said support and material to betreated successively froma loading position into said preheat housing,said heating chamber and finally into said quenching chamber, and aconveyor mechanism for mechanically returning said support and materialbeing treated back to a point adjacent said loading position.

17. An equipment for heat treating consisting of a multiple ofadjacently arranged housings, means for heating some housings, means forcooling other housings, a drawing oven, fluid circulating meansfor'heating said drawing oven and a mechanical system for intermittentlyand rapidly transferring the material to be treated from one housing tothe next housing successively and into said draw oven and from said drawoven to a point adjacent the first housing.

WIILIAM A. DARRAH.

